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30408394 = 219976403
BaseRepresentation
bin111001111111…
…1111011001010
32010012220110211
41303333323022
530241032034
63003431334
7516316132
oct163777312
963186424
1030408394
111618a305
12a22554a
1363b8b43
144077ac2
152a09d64
hex1cffeca

30408394 has 8 divisors (see below), whose sum is σ = 45842400. Its totient is φ = 15127596.

The previous prime is 30408337. The next prime is 30408397. The reversal of 30408394 is 49380403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30408397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37804 + ... + 38599.

It is an arithmetic number, because the mean of its divisors is an integer number (5730300).

Almost surely, 230408394 is an apocalyptic number.

30408394 is a deficient number, since it is larger than the sum of its proper divisors (15434006).

30408394 is a wasteful number, since it uses less digits than its factorization.

30408394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76604.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30408394 is about 5514.3806542530. The cubic root of 30408394 is about 312.1268728476.

Adding to 30408394 its reverse (49380403), we get a palindrome (79788797).

The spelling of 30408394 in words is "thirty million, four hundred eight thousand, three hundred ninety-four".

Divisors: 1 2 199 398 76403 152806 15204197 30408394